Yes, you are right, the lack of compassion and the impossibility
or unwillingness of aggressors to change places with their victims for a moment
and feel in themselves the same suffering they are causing, reflects in a crude
manner the human selfishness and lack of feelings.

As you say, Jesus life and teach is simple. Mankind is complex.

One of the reasons I take the time and care with Timber and the
other deer, is simple compassion and love; they can't be liberated into the
wild, they lack their mother's example and guidance when fawns are young, and
the indispensable learned interaction between other deer. They wouldn't survive
by themselves, and I feel the responsibility to make their life as good and safe
as possible. I would even defend them with my bare hands if a dog, coyote or
cougar try to prey on them.

I don't pretend to justify hunters or their reasons to hunt, As
with deer, I understand that human behavior is part of their nature and a
heritage from our ancestors. Unfortunately this also includes war, crimes,
cruelty and the lack of compassion, and usually gets added as regular 'software'
in human kind.... But, It is our will to decide our behavior, and as you say we
have Jesus example.